Ultegra bottom bracket bearings for HollowTech II road cranksets. A larger axle and wider bearing placement provides ultimate stiffness, whilst the minimal bearing interface gives super smooth rotation and increased durability. Blending race proven technology and ergonomic perfection to create a stiff and lightweight pedalling platform ideal for competition. 

Compatible with 68mm shells


R7000/R8000 11sp BB-R60 BB cups Eng screw in Shimano